A thirder and an Everettian: A reply to Lewis's 'Quantum Sleeping Beauty'

Analysis 69 (1):78-86 (2009)
Since the publication of Elga's seminal paper in 2000, the Sleeping Beauty paradox has been the source of much discussion, particularly in this journal. Over the past few decades the Everettian interpretation of quantum mechanics 1 has also been much debated. There is an interesting connection between the way these two topics raise issues about subjective probability assignments.This connection is often alluded to, but as far as we know Peter J. Lewis's ‘Quantum Sleeping Beauty’ is the first attempt to examine it explicitly. Lewis claims that the two debates are not independent: to be specific, he argues that accepting the Everettian interpretation of quantum mechanics requires you to be a ‘halfer’ about Sleeping Beauty, in opposition to the more widely accepted ‘thirder’ solution.This paper will argue that Lewis is wrong. Everettians do not have to be halfers. It is perfectly cogent to be both an Everettian and a thirder
Keywords Everettian interpretation  Many-worlds interpretation  Quantum Sleeping Beauty  Sleeping Beauty paradox
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DOI 10.1093/analys/ann012
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References found in this work BETA
Hilary Greaves (2004). Understanding Deutsch's Probability in a Deterministic Universe. Studies in History and Philosophy of Modern Physics 35 (3):423-456.

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Citations of this work BETA
Alastair Wilson (2013). Everettian Confirmation and Sleeping Beauty. British Journal for the Philosophy of Science (3):axt018.
Darren Bradley (2015). Everettian Confirmation and Sleeping Beauty: Reply to Wilson. British Journal for the Philosophy of Science 66 (3):683-693.

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